hal_spear_i2c.h

Spearhead2000的bootloader

#ifndef HAL_SPEAR_I2C_H
#define HAL_SPEAR_I2C_H

static unsigned int Timeoutcount;

#define I2C_Peripheral_Disable() (I2CCR &= 0x1F)             /* Disables I2C */


typedef enum
{
	I2C_DEFAULT_PARAM1              = (unsigned char) 0x00,
	I2C_ENABLE_ACK                  = (unsigned char) 0x04,
	I2C_IT_ENABLE                   = (unsigned char) 0x01
}   I2C_InitParam;

/* Parameters for configuring I2C in transmitter/ receiver mode */

typedef enum
{
	I2C_TX_MODE                     = (unsigned char) 0x00,
	I2C_RX_MODE                     = (unsigned char) 0x01,
}I2C_Mode;

/* Parameters for selecting the speed mode */
typedef enum
{
	I2C_DEFAULT_PARAM2              = (unsigned char) 0x00,
	I2C_FASTSPEED                   = (unsigned char) 0x80
}I2C_SpeedMode;

/* Transmission status parameters */
typedef enum
{
	I2C_TX_BUFFER_ONGOING           = (unsigned char) 0xFF,
	I2C_TX_STRING_ONGOING           = (unsigned char) 0xFE,
        I2C_HEADERADD_TX_OK             = (unsigned char) 0x40,
	I2C_TX_AF                       = (unsigned char) 0x10,
	I2C_START_OK                    = (unsigned char) 0x08,
	I2C_TX_ARLO                     = (unsigned char) 0x04,
	I2C_TX_BERR                     = (unsigned char) 0x02,
	I2C_ADD_TX_OK                   = (unsigned char) 0x01,
	I2C_DATA_TX_OK                  = (unsigned char) 0x00
}I2C_TxErrCode_t;

/* Reception status parameters */
typedef enum {
	I2C_RX_BUFFER_ONGOING           = (unsigned char) 0xFF,
	I2C_RX_DATA_EMPTY               = (unsigned char) 0xFE,
	I2C_RX_BERR                     = (unsigned char) 0x02,
	I2C_RX_ARLO                     = (unsigned char) 0x04,
	I2C_RX_AF                       = (unsigned char) 0x10,
	I2C_DATA_RX_OK                  = (unsigned char) 0x00
}I2C_RxErrCode_t;

/* Parameters for enabling or disabling ACK bit */
typedef enum
{
	I2C_ACK_ENABLE                  = (unsigned char) 0x04,
	I2C_ACK_DISABLE                 = (unsigned char) 0x00
}I2C_ACK_Param;

int I2C_Generate_Start( void ); /*Generate start condition */

/* Description of all the functions defined in this module */
int I2C_Init (I2C_InitParam Init_Value) ;                 /* Initialise I2C */


void I2C_Select_Speed (I2C_SpeedMode Speed_Value, unsigned int I2C_Speed);
         /* Selects the I2C clock speed both in standard and fast speed mode */

int I2C_Load_Address (unsigned char Addr_Byte, I2C_Mode Mode_Value);

/* Transmits slave address */


int I2C_SendByte (unsigned char Tx_Data);   /* Transmits single byte of data */

unsigned char I2C_ReceiveByte (void);   /* Returns the received single data byte */


int I2C_Generate_Stop (void);                    /* Generate stop condition */



void I2C_ACK (I2C_ACK_Param ACK_Value);

unsigned char I2C_RecieveByte(void);

I2C_RxErrCode_t I2C_RecieveBuffer(unsigned char *PtrToBuffer,   int NbOfBytes);



I2C_TxErrCode_t I2C_IsTransmitCompleted(void);

I2C_RxErrCode_t I2C_IsReceptionCompleted(void);

int User_Timeout_Function(void);

int I2C_IsStopGen (void);

int I2C_SendBuffer (const unsigned char *PtrToBuffer, int NbOfBytes);

I2C_TxErrCode_t I2C_MultiWriteRegister16( unsigned char SlaveAddress, int Index, char * PtrToBuffer,int  NbOfBytes);


I2C_TxErrCode_t I2C_MultiWriteRegister8( unsigned char SlaveAddress, short int Index, char * PtrToBuffer,int  NbOfBytes);


I2C_RxErrCode_t I2C_MultiReadRegister16( unsigned char SlaveAddress, short int Index, char * PtrToBuffer,int  NbOfBytes);

I2C_RxErrCode_t I2C_MultiReadRegister8( unsigned char SlaveAddress, unsigned char Index, char * PtrToBuffer,int  NbOfBytes);


I2C_TxErrCode_t I2C_MultiWritePages( unsigned char SlaveAddress, short int Index, char * PtrToBuffer,int  NbOfBytes);


#endif